I'm 13 and I might be pregnant..what do i do?

MY PERIOD STILL HASNT CAME BUT ITS SUPPOSED TO *** DIS WEEK..HOPEFULLY..BUT I ALWAYZ FEEL TIRED AND MY STOMACH IS ALWAYZ HURTING..ARE THESE EARLY SINS OF PREGNANCY OR WAT??LIKE WEN I GET OUT OF BED I FEEL WOOZY OR IF IM DOIN ANYTHING AT ALL I FEEL TIRED ADN SLEEPY..&& I CANT LAY ON MY BELLY FOR LONG CUZ IT WILL START TO HURT..